cronokirby

4 ms·

1.
by cronokirby 4y ago
A subtle point which I don't really explain in the post, since it was initially targeted to people who had done some cryptography with groups before, is that you need to carefully distinguish a group as a mathematical object, and a gro
2.
by cronokirby 4y ago
That is true. That said, there are few situations where the modulus being used is not a public parameter of a protocol, and it is very difficult to perform operations with a secret modulus in constant-time, as your comment points out. You&#
3.
by cronokirby 4y ago
If you have a random stream of bits, and you use rejection sampling to extract a value from that stream, then you don't reveal any information about the value. At most, you reveal information about the stream prior to the value you cho
4.
by cronokirby 4y ago
It does sometimes get abused, but such abuses fall under wire fraud laws, which carry heavy punishments. So, the legal system is the prevention mechanism for abuse here.
5.
by cronokirby 4y ago
One big difference is the density of the fuel. You can fill a car with gas in under a minute. While fast-charging (like Tesla's super charging) has growing deployment, that's still at least 15 minutes or so, which is a significant
6.
by cronokirby 5y ago
Reading this post, this is actually an explanation of Schnorr signatures, not ECDSA signatures. Bitcoin uses the latter, except for new transactions after the Taproot update, which the author doesn't reference here. In fact, the auth
7.
by cronokirby 5y ago
Sleeping just long enough to fill the remaining time-slot for an operation is actually a valid countermeasure; in theory. The problem is figuring out how much sleep is necessary based on what variable time work has been done, and actually s
8.
by cronokirby 5y ago
Author here. To illustrate my point further, let's say that your operation takes either 0.1ms or 0.0ms. If you add in a uniform random delay of 100-1000ms, your expected random delay becomes 450ms. The expected total runtime is thus ei
9.
Monty Hall and Counterfactuals(cronokirby.com)
2 points by cronokirby 6y ago|1 comments